LOVE this sturdy bag for two toddlers, ages 5 and 2. The only thing we didn't like it that the "tissue" zipper in the side cannot work with our portable wipes packages. We might just cut out a hole and it will work better for us to dispense wipes easily. The wide-open top of the bag is amazing. The straps and metal zippers are sturdy and the velcro straps work great on a shopping cart, even when filled. The back zippers are awesome for getting clothes from the very bottom of the bag, beneath our cooler, so you.don't have to dig through the bag. The front zippered pockets are great for thermometer, cell phone, etc. I haven't evennused the USB port yet. We've used this bag non-stop for ine month. We don't carry bottles anymore, but if we did, this is so great. Wish i had this bag YEARS AGO! We got black and my husband loves this bag, too. Much better than our skip hop or our Fisher Price backpack. We both love it.